내 그룹 목록 조회 api

Author: eunhye-ahn

polling-app-server/src/main/java/com/example/polls/controller/GroupController.java

@@ -11,10 +11,9 @@
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.security.core.annotation.AuthenticationPrincipal;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestBody;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
 
 @RestController
 @RequestMapping("/api/groups")
@@ -45,4 +44,11 @@ public ResponseEntity<GroupSummaryResponse> createGroup(
         return ResponseEntity.status(HttpStatus.CREATED).body(response);
     }
 
+    @GetMapping("/my")
+    public ResponseEntity<List<GroupSummaryResponse>> getMyGroups(@AuthenticationPrincipal UserPrincipal userPrincipal) {
+        Long useId = userPrincipal.getId();
+        List<GroupSummaryResponse> groups = groupService.getGroupsForUser(useId);
+        return ResponseEntity.ok(groups);
+    }
+
 }

polling-app-server/src/main/java/com/example/polls/payload/Response/GroupSummaryResponse.java

@@ -2,6 +2,8 @@
 
 import com.example.polls.model.Group;
 
+
+
 public class GroupSummaryResponse {
     private Long id;
     private String name;

polling-app-server/src/main/java/com/example/polls/repository/GroupMemberRepository.java

@@ -1,7 +1,14 @@
 package com.example.polls.repository;
 
+import com.example.polls.model.Group;
 import com.example.polls.model.GroupMember;
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+
+import java.util.List;
 
 public interface GroupMemberRepository extends JpaRepository<GroupMember, Long> {
+    @Query("SELECT gm.group FROM GroupMember gm WHERE gm.user.id = :userId")
+    List<Group> findGroupsByUserId(@Param("userId") Long userId);
 }

polling-app-server/src/main/java/com/example/polls/repository/GroupRepository.java

@@ -2,6 +2,8 @@
 
 import com.example.polls.model.Group;
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
 import org.springframework.stereotype.Repository;
 
 import java.util.List;
@@ -12,4 +14,7 @@ public interface GroupRepository extends JpaRepository<Group, Long> {
     Optional<Group> findByJoinCode(String joinCode); //코드로 그룹조회
     List<Group> findAllByMembers_user_Id(Long userId);
     boolean existsByJoinCode(String joinCode); //중복방지
+
+    @Query("SELECT g FROM Group g Join g.members gm WHERE gm.user.id = :userId")
+    List<Group> findAllByUserId(@Param("userId") Long userId);
 }

polling-app-server/src/main/java/com/example/polls/service/GroupService.java

@@ -13,7 +13,10 @@
 import org.springframework.stereotype.Service;
 
 import javax.transaction.Transactional;
+import java.util.Collection;
+import java.util.List;
 import java.util.UUID;
+import java.util.stream.Collectors;
 
 @Service
 @RequiredArgsConstructor
@@ -71,4 +74,13 @@ private String generateUniqueJoinCode() {
        }while(groupRepository.existsByJoinCode(code));
        return code;
     }
+
+
+    //내 그룹 조회
+    public List<GroupSummaryResponse> getGroupsForUser(Long userId) {
+        List<Group> groups = groupMemberRepository.findGroupsByUserId(userId);
+        return groups.stream()
+                .map(GroupSummaryResponse::new)
+                .collect(Collectors.toList());
+    }
 }